以切花月季卡罗拉（Rosa hybrida ‘Carolla’）为试验材料，于2017年10月—2018年11月观察温室条件下切花月季弯梗现象的发生率及内外部形态结构。结果表明，高温是导致弯梗现象的原因之一。发生弯梗的植株花瓣减小且花头变小，子房也变得扁平。弯梗植株的1号萼片发生叶变现象，萼片面积增大，下表皮的毛状结构消失，出现了密集的气孔，着生位置也出现高度不等的下落现象。其他4个萼片呈逆时针的异位表达，1号萼片本应着生的位置则被萼瓣状的器官替代，萼瓣的上表皮细胞结构发生变化，下表皮则出现了与萼片相同的毛状组织。弯梗植株的花梗部的维管束、韧皮层及厚壁组织细胞都发生了显著的变化，并朝1号萼片下落侧弯曲。

Morphological characteristics,anatomical structure,and occurrence rate of bent peduncle phenomenon(BBP)were investigated in Rosa hybrida ‘Corolla’ in greenhouse.The results showed that high temperature caused a significant increase of BBP rate. The number of petals of BBP stems decreased and the flower size was smaller than those of normal stems.Moreover, the ovary also became flat.The phylloid structure appeared in No.1 sepal of BBP plant and the sepal area was enlarged,and the hairy structure of the lower epidermis disappeared and was replaced by dense stomata,and a fall of varying heights of growth positions occurred.The other four sepals were dislocated counterclockwise.The original growth position of No.1 sepal was replaced by sepalody,the structure of the epithelial cells of the sepalody changed,and the same hairy tissue as the sepal appeared in the epidermis.The vascular bundle,phloem and sclerenchyma cells of BBP peduncle changed significantly,and the peduncle bended toward to No.1 sepal.